package org.jeecg.common.exception;

import lombok.extern.slf4j.Slf4j;
import org.apache.shiro.authz.AuthorizationException;
import org.apache.shiro.authz.UnauthorizedException;
import org.jeecg.common.api.vo.Result;
import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.dao.DuplicateKeyException;
import org.springframework.data.redis.connection.PoolException;
import org.springframework.http.HttpStatus;
import org.springframework.validation.BindException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.multipart.MaxUploadSizeExceededException;
import org.springframework.web.servlet.NoHandlerFoundException;

import javax.validation.ConstraintViolationException;

/**
 * 异常处理器
 *
 * @Author scott
 * @Date 2019
 */
@RestControllerAdvice
@Slf4j
public class JeecgBootExceptionHandler {

    /**
     * 处理自定义异常
     */
    @ExceptionHandler(JeecgBootException.class)
    public Result<?> handleJeecgBootException(JeecgBootException e) {
        log.error(e.getMessage(), e);
        return Result.error(e.getMessage());
    }

    /**
     * 处理自定义异常
     */
    @ExceptionHandler(JeecgBoot401Exception.class)
    @ResponseStatus(HttpStatus.UNAUTHORIZED)
    public Result<?> handleJeecgBoot401Exception(JeecgBoot401Exception e) {
        log.error(e.getMessage(), e);
        return Result.error(HttpStatus.UNAUTHORIZED.value(), e.getMessage());
    }

    /**
     * 校验异常
     *
     * @author chechen
     */
    @ExceptionHandler(CheckFailedException.class)
    public Result<?> handleCheckFailedException(CheckFailedException e) {
        log.warn(e.getMessage());
        return Result.error(HttpStatus.NOT_FOUND.value(), e.getMessage());
    }

    /**
     * 接口限流异常
     *
     * @author chechen
     */
    @ExceptionHandler(LimitAccessException.class)
    public Result<Object> handleLimitAccessException(LimitAccessException e) {
        log.warn(e.getMessage());
        return Result.error(HttpStatus.TOO_MANY_REQUESTS.value(), e.getMessage());
    }

    /**
     * 类型转换异常
     *
     * @author chechen
     */
    @ExceptionHandler(TypeConversionException.class)
    public Result<Object> handleTypeConversionException(TypeConversionException e) {
        log.warn(e.getMessage());
        return Result.error(HttpStatus.TOO_MANY_REQUESTS.value(), e.getMessage());
    }

    /**
     * 处理 form data方式调用接口校验失败抛出的异常
     *
     * @author chechen
     */
    @ExceptionHandler(BindException.class)
    public Result<?> bindExceptionHandler(BindException e) {
        String errorMessage = e.getBindingResult().getFieldErrors().get(0).getDefaultMessage();
        log.warn(errorMessage);
        return Result.error(HttpStatus.BAD_REQUEST.value(), errorMessage);
    }

    /**
     * 处理 json 请求体调用接口校验失败抛出的异常
     *
     * @author chechen
     */
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public Result<?> methodArgumentNotValidExceptionHandler(MethodArgumentNotValidException e) {
        String errorMessage = e.getBindingResult().getFieldErrors().get(0).getDefaultMessage();
        log.warn(errorMessage);
        return Result.error(HttpStatus.BAD_REQUEST.value(), errorMessage);
    }

    /**
     * 处理单个参数校验失败抛出的异常
     *
     * @author chechen
     */
    @ExceptionHandler(ConstraintViolationException.class)
    public Result<?> constraintViolationExceptionHandler(ConstraintViolationException e) {
        String errorMessage = e.getConstraintViolations().iterator().next().getMessage();
        log.warn(errorMessage);
        return Result.error(HttpStatus.BAD_REQUEST.value(), errorMessage);
    }

    @ExceptionHandler(NoHandlerFoundException.class)
    public Result<?> handlerNoFoundException(Exception e) {
        log.error(e.getMessage(), e);
        return Result.error(404, "路径不存在，请检查路径是否正确");
    }

    @ExceptionHandler(DuplicateKeyException.class)
    public Result<?> handleDuplicateKeyException(DuplicateKeyException e) {
        log.error(e.getMessage(), e);
        return Result.error("数据库中已存在该记录");
    }

    @ExceptionHandler({UnauthorizedException.class, AuthorizationException.class})
    public Result<?> handleAuthorizationException(AuthorizationException e) {
        log.error(e.getMessage(), e);
        return Result.noauth("没有权限，请联系管理员授权");
    }

    @ExceptionHandler(Exception.class)
    public Result<?> handleException(Exception e) {
        log.error(e.getMessage(), e);
        return Result.error(e.getMessage() != null ? e.getMessage() : "操作失败");
    }

    /**
     * @param e
     * @return
     * @Author 政辉
     */
    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
    public Result<?> HttpRequestMethodNotSupportedException(HttpRequestMethodNotSupportedException e) {
        StringBuffer sb = new StringBuffer();
        sb.append("不支持");
        sb.append(e.getMethod());
        sb.append("请求方法，");
        sb.append("支持以下");
        String[] methods = e.getSupportedMethods();
        if (methods != null) {
            for (String str : methods) {
                sb.append(str);
                sb.append("、");
            }
        }
        log.error(sb.toString(), e);
        //return Result.error("没有权限，请联系管理员授权");
        return Result.error(405, sb.toString());
    }

    /**
     * spring默认上传大小100MB 超出大小捕获异常MaxUploadSizeExceededException
     */
    @ExceptionHandler(MaxUploadSizeExceededException.class)
    public Result<?> handleMaxUploadSizeExceededException(MaxUploadSizeExceededException e) {
        log.error(e.getMessage(), e);
        return Result.error("文件大小超出10MB限制, 请压缩或降低文件质量! ");
    }

    @ExceptionHandler(DataIntegrityViolationException.class)
    public Result<?> handleDataIntegrityViolationException(DataIntegrityViolationException e) {
        log.error(e.getMessage(), e);
        return Result.error(e.getMessage());
    }

    @ExceptionHandler(PoolException.class)
    public Result<?> handlePoolException(PoolException e) {
        log.error(e.getMessage(), e);
        return Result.error("Redis 连接异常!");
    }

}
